Andy Lutomirski discovered a race condition in flushing of the TLB
when switching tasks. On an SMP system this could possibly lead to
a crash, information leak or privilege escalation.

For the oldoldstable distribution (squeeze), these problems have been
fixed in version 2.6.32-48squeeze19. Additionally, this version
includes upstream stable update 2.6.32.70. This is the final update
to the linux-2.6 package for squeeze.

For the oldstable distribution (wheezy), these problems will be fixed
soon.